Section Controller

A frontend Section controller that solve for dynamic frontend rendering needs and improve page load speed. Controls and observes server-side rendered Sections and provides utility interface to the Section-Rendering API for client-side rendered Sections, implemented as a universal controller. Asynchronously load Sections, swap out sections based on interactions, track impressions based on actual visibility. This is a utility which serves many purposes and is a standard inclusion of SLTWTR theme builds.